VoIP with Linux?

[Janina Sajka]

Get your voip service provider to tell you what ports they need, then
just forward those. You shouldn't have to guess at this. This is a
question they probably answer frequently.

Andor Demarteau writes:
> On Mon, 14 Mar 2005, Christian Schoepplein wrote:
>  > Yes, thats right. I decided, to use asterisk, it seems that this is
>  > exactly what I need. I tryed linphone before, but without success
>  > because the programm had problems with my firewall setup. The
>  > configuration of asterisk is really a big torture, I'm searching arround
>  > the internet and through the docu since friday :-(. Now I subscribed to
>  > the asterisk-users mailinglist, but if anybody here can give my some
>  > hints how to get asterisk to work just for ip telephony (getting calls
>  > from the internet to my pc behind a nat firewall and vice versa), I
>  > would be verry happy!
> first of all, NAT-triversal depends greatly on which VoIP protocol you are
> using.
> Astiersk' native IAX2 does veryw ell in this case, SIP will probably work
> too.
> 
> It also depends on the otehr site (the VoIP provider).
> 
> http://www.voip-info.org/tiki-index.php?page=Asterisk general docs
> http://www.automated.it/guidetoasterisk.htm some general notes and
> config-stuff for www.freeworlddialup.com
> 
> Don't be too overwelmed as Asterisk can do too much for what you need :)
> look at exten.conf and trhough everything out you don't need.
> 
> only thing you need is probably a line saying dial,console (and the
> appropriate alsao ro oss config)
> and lines to dialout to yoru VoIP-provider (and vociemail if you are
> feeling up to it :) ).
> 
>  >
> 
> -- 
> Andor Demarteau                 E-mail: andor at nl.linux.org
> student computer science        www: http://www.nl.linux.org/~andor
> UU based & VU guest-student     jabber,icq,msn,voip: do ask ;)
> -----------
> chairman Stichting Studiereizen Storm 2002-2004
> vice-chairman USF Studentenbelangen executive committee 2002-2003
> 
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-- 

Janina Sajka				Phone: +1.202.494.7040
Partner, Capital Accessibility LLC	http://www.CapitalAccessibility.Com

Chair, Accessibility Workgroup		Free Standards Group (FSG)
janina at freestandards.org		http://a11y.org

If Linux can't solve your computing problem, you need a different problem.